Ohio Rev. Code § 4133.13: Limitations.

Nothing contained in this chapter or in any alternate employer organization agreement shall do any of the following:

(A) Diminish, abolish, or remove the rights and obligations of client employers and worksite employees existing prior to the effective date of the alternate employer organization agreement;

(B) Affect, modify, or amend any contractual relationship or restrictive covenant between a worksite employee and any client employer in effect at the time an alternate employer organization agreement becomes effective;

(C) Prohibit or amend any contractual relationship or restrictive covenant between a client employer and a worksite employee that is entered into after the alternate employer organization agreement becomes effective;

(D) Create any new or additional enforcement right of a worksite employee against an alternate employer organization that is not specifically provided by the alternate employer organization agreement or this chapter.

An alternate employer organization shall have no responsibility or liability in connection with, or arising out of, any contractual relationship or restrictive covenant between a client employer and a worksite employee unless the alternate employer organization has specifically agreed otherwise in writing.